A lasagne roll up (in our house anyway LOL) means that I just take the cooked noodle, and lay it vertically in front of me. I take a spoon of filling (ricotta, mozzerella, egg, and seasonings, sometimes finely chopped chicken or ground meat too), and spread it along the length of the noodle. I then roll it up, jelly roll style I guess.

I take these and flash freeze on a cookie sheet until firm...about an hour, and put into a freezer container. THen I can pull out as many or few as I want at a time. Top with sauce and bake. For DH, DS and I, I'll pull out 6-7 rolls. THat way i don't have a huge pan of lasagne to use up since there are only 2.5 of us to eat it. For us, it works out better if I'm looking to make bigger quanities but in smaller serving sizes.